Advice on teaching the two-digit numbers, including the handling of teen numbers.

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### Teaching Strategies: How to Use Double Ten Frame Flashcards (Aust version)

Teacher notes: teaching with ten frames to 20. Why they are important, teaching tips and classroom activites and ideas.

• ### Teaching Strategies: Introducing Teen Numbers Double Ten Frames

Teacher notes: using double ten frames for recognition of numbers to 20, addtion, subtraction, and multiplication facts.

• ### Tens & Ones Place Value: Teaching Strategies Manipulatives Comparison

Teacher notes: How are manipulatives (concrete materials) different from one another in teaching the tens and ones place, what the benefits are of each and how they are used.

• ### Tens & Ones Place Value: Teaching Strategies Introduction

Teacher notes: Introducing place value with tens and ones, with activities, questions and classroom ideas; how to develop the concept and what to use. Includes template for T O chart.

• ### Template: Teacher Set of Base Ten Blocks

Large images of base ten blocks suitable for board use. Just print, laminate and glue adhesive to the back.

• ### Introducing Teen Numbers [PowerPoint TBM101]

77 slides. Introduction to teen numbers using double ten frames, including sequence for introducing the numbers 10-19. Interactive PowerPoint Think Bubble Math 101

• ### Regrouping with Tens and Ones [PowerPoint TBM201]

34 slides. Tens and Ones explored with a focus on regrouping for example 6 Tens to 4 Tens and 26 Ones. Number expanders used for some examples. Interactive PowerPoint Think Bubble Math 201

• ### Tens and Ones Regrouped

3 pp. Tens and ones worksheet to accompany “Regrouping with Tens and Ones” [PowerPoint TBM201]

• ### Ten Frames: Introducing Numbers to 20

Recognition & writing of numbers to 20 using double ten frames. Combined pages introducing teen numbers with ten Frames.

• ### Writing numbers 11 to 19

5pp. Reading and writing the number names in words for numbers 11 to 19.

• ### Teaching Strategies: Number Lines to 20

7pp. Ideas for classroom and small group activities with number lines. Includes multiple number line templates for printing class sets.

• ### Finding Numbers to 20 on a Number Line

9 pp. Position numbers on number lines. Find the missing numbers and match with ten frames worksheets. Includes 2 templates.

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### Number Popup Quick Start Guide

2pp. Features and functions of the Number Popup Gadget: Expand numbers with place value visually displayed

• ### Number Popup Gadget Worksheets: Numbers to 99 and 999

11pp. Use the Number Popup Gadget to understand and write expanded notation for numbers to 99 and 999. Includes lesson plans and worksheets.